Type-writing machine.



E. S. MGALL.

4TYPE WRITING MACHINE.

APPLICATION FILED Nov. 21, 1907.

Patented July 11, 191i..

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APELIGTION FILED NOV. 21, 1907.

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'EDWARD S. MGALL, QF SYRACUSE, NEW YORK, ASSIGNOR T0 AVEY A. MOYER, OF

SYLRACUSE, NEW YORK.

TYPE-'WRITING MACHINE.

Specification of Letters Patent. Patentd July 11, 1911 Application filed November 21, 1907. Serial No. 403,120.

To all whom it mcg/concern.'

Be it known that-, EDWARD S. MCALL, a citizen of the United States, residing at Syracuse, ,in' the county of Onondaga and State of New York, have invented a new and useful Improvement in Type-VVriting Machines, of which the following is a specification.

This invention relates more particularly to center guides forithe type-bars of front- ,strike typewriting machines in which the platen is shifted to place it in printing relation with one or another of diiferent sets of type on the type-bars, and the ribbon vibrator and its support or guide are shifted with the platen.. u v

` The center guide should retain a fixed relation Nto the type-bars, and-the principal object of the invention is to provide an etlicient center guide of exceedingly simple and inexpensive construction and arrangement, such that it can be fixed tothe stationary frame of the machine close to the platen and ribbon vibrator Without interference with the latter and its support or guide, and

. without obstructing the operators View of the Work or the letter scale on the carriage `in rear of the center guide. In the accompanying drawings: Figure l 39 is a front elevation of portions of a typeposition of Writing machine provided with a center guide embody ng the invention, showing the e parts when the platen is shifted for upper case work. lFig. a. is a similar View thereof, showing the normal position of the parts. Fig. 3 is a cross-section thereof, on an enlarged scale, in line 3-3, Fig. 2. Figs. t and 5 are sectional elevations thereof in lines 4-4 and 5-5,

40 Fi s.- 1 and 2, respectively, butI showing a dierent type-bar. i A

Likeletters of reference refer to like parts in the several figures.

A represents the top plate of the main frame, B the platen, C the platen carriage,

D the carriage shift frame, and E one of.

the type-bars of'a' front-strike typewriting machine. The shift frame D, upon which the carriage'is supported and travelshorizontally, is suitably pivoted at the upper rear portion of thev main frame to swing up and down about an axis indicated at d,

and is shifted by means (not shown) for placing the platen in printing relation to 5 one or another set of type on .the type-bars.

ynot necessarily, provided with The type-barsE are pivoted in any suitable A manner below the shift frame to swing upwardly and rearwardly to strike the front side of the platen, and are preferably,though guide lugs or extensions c, Figs. 1 and 2, which depend from the type-heads in line therewith so as to enter the center near the platen. Otherwise the parts referred t` may be of any usual or suitable construction and arrangement.

' F representsa vibrating ribbon guide or vibrator of ordinary construction, having ribbon guide loops at its upper end which is forked or slotted for t-he passage of thel type-bars, and G re resents an upright support or guide for t e vibrator rising from the front central part of the shift frame in front of the letter space scale g which is secured to the front part of the carriage C, The support perferably has rearwardly extending tension or bracket g of the shift frame by screws g2, and also has a slotted or open upper portion for the passage of the typesbars. The vibrator slides vertically in a 'suitableI guidewvay on the rear ofthe support G and its lower endy is connected to the operating means, .consisting preferably of a lever g3 pivoted on the shift.Y frame extension and vibrated by connections not shown. By thus 'mounting the vibrator guide to shift with the platen, a better support for the vibrator guide when the type-bars legs secured in a slotted front exis obtained than by the usual fixed guide, f

and the printing point indicator g4 on the vibrator is retained in the same position over the lower portion of the scale y except at the instant when the vibrator is moving.

H represents a line or paper gage, which, in the construction shown, is secured centrally by screws lz on the back of the vibrator support G and has horizontal arms which project to opposite sides of the support close' to the platen and have straight upper edges forfacilitating the proper adjustment of the paper on the platen. The line gage thus serves to confine the vibrator in lts lguide- Way on the support G. Thel vibrator, its

support and the line gage are all slotted' I or provided with registering'V openings at their upper central portions throughlpivhich the type heads pass in making the iliiprcs sions, and the openings of the vibrator and' support expose to view the letter space scale g in rear thereof; A

center guide, substantially as set.

I represents the center guide for the typebars. The center guide is located in front of the vibrator support and has a vertical bevel edged guide slot z' in line with the printing point on the platen, and supporting legs which straddle the vibrator support and are secured at opposite sides thereof by screws z", or otherwise, to t-he top plate A. The guide is preferably formed of a single piece of hardened steel, the upper slotted portion thereof being thicker than the supporting legs and extending into the opening in the upper part of the vibrator support close to the platen.

As the shift frame is pivoted and the vibrator and its support are mounted on the shift frame, they move with the same in an are concentric with the pivotal axis d of the shift frame, instead of vertically, so that when the shift frame `is raised the support moves upwardly and forwardly toward the center guide, but as the support can enter between the legs of the guide and the opening in its upper portion receives the upper thick part of the guide, the center guide can be arranged very closev to the vibrator support without interfering with the movement of the vibrator support when the platen is shifted, and without necessitating the offset of the type-bars to be increased. rIhe straddling legs of the center guide also constitute 'a very rigid support therefor.

I claim as my invention:

1. In a typewriting machine, the combination of a shiftable platen, a ribbon vibrator, a guide on which the vibrator reciproeates and which .shifts with the platen, a stationary center guide for the type-bars having the part thereof which the type-bars enter arranged in front of the vibrator and a series of type-bars arranged to swin into the fiorth.

2. In a typewriting machine, the combination of a platen, a pivoted shift frame therefor, a ribbon vibrator, a guide on which the vibrator reciproeates and which is mounted on said shift frame to shift with the platen,

a series of type bars, andla stationary center Y-guide for the type-bars mounted in front of i the lshift frame substantially in the plane of .said vibrator lguide and indelwndently thereof, substantially as set forth.

.3. In a typewriting machine, they combination ofla platen and shiftable carriage for '-tihe saine, a niain frame, a ribbon vibrator, a guide therefor which shifts with the car- :.'iage7 a eentergnide fixed on the main fraaie and arrangedgin front of the carriage and slibstantially in the plane ot the vibrator guide. and a ,series of type-bars arranged to swing into/the center guide. substantially as set forthf I Il. In a typewriting machine, the combination of a platen and shii'table carriage for the ysame, a stationary top plate, a ribbon vibrator, a guide therefor' which shifts with the carriage, a series of type-bars, and a center guide for the type-bars fixed on the top plate and arranged in front of the Vibrator and independently of the vibrator guide, substantially as set forth.

5. In a t-ypewriting machine, the combination of a platen and shiftable carriagev for the same, a main frame, a ribbon vibrator, a guide therefor which shifts ywith the carriage, a series of type-bars, and a stationary center guide for the-type-bars having two separate connections with the main frame by which .it is rigidly supported in front of the vibrator and substantially in the plane'of the vibrator guide,.sub.\ktantially as-set forth.

(i. In a typewriting machine, thecombination of a platen and shiftable carriage for the same, a ribbon vibrator, a lguide therefor which shifts with the carriage, a selles of type-bars, and a one-partcenter gulle `for the type-bars supported in a fixed position in front of the vibratorand substantially in. the plane of the vibrator guide, substantially as set forth. t v

7. In a typewriting machine, the combination of a platen and shiftable carriage for the same, a main frame, aI ribbon vibrator, a guide therefor which shifts with the carriage, a series of type-bars.1 and a 4center guide for the type-bars arranged in front of the vibrator and having \supporting legs which straddle the vibrator guide and eX- tend laterally and downwardly and are se' cured to the main frame, substantially as setvv fort-h. t

8. In a typewriting machine, the combination of a platen, an oscillatory shift .frame for the saine, a ribbon vibrator, ay guide therefor which shifts with the shift frame,.a series of type-bars, and a stationary center `guide for the type-bars having an opening into which the vibrator guide swings when the shift frame is shifted, substantially as set forth.

9. In a typewriting machine, the combination of-a platen and an oscillatory shift frame for the same, a main frame support# ing the shift framea series of type-bars, a

center guide for the typebars having sepal. rated legs rigidly connected to the main frame, a ribbon' vibrator, and a guide, therefor arranged-,tto Ashift with the shift frame and to swing between the legs of the center guide whenljthe platen is shifted, substanf` tially as set forth. v

10. In a typewriting machine, the combi-l lition of a platen and a shiftable carriage or the same, a main franle,.a series of typebars,.a center guide for the type-lnirssupported by the lnain frame, a`ribbon vibrator and guide. therefor in rear of the center guide and both shifting with the carriage, and a scale moving with the carriage located in rear of the ribbon vibrator, said center IOO guide, Vibrator guide and Vibrator each having an opening in front of the scale through which the vscale can be seen, substantially as set forth.

l1. In a typewriting machine, the combination of a platen and a Shiftable carriage for the same, a main frame, a series of typebars, a center guide for the type-bars Supported by the main frame, a ribbon vibrator guide which is separate from and is located in rear of the center guide, a ribbon vibrator in rear of and and a line gage in rear of the vibrator, said 'line gage, vibrator and vibrator support being arranged to shift with the carriage, substantially as set forth.

12. In a typewriting machine, the combiguided by the vibrator guide,

nation of a'platen, a pivoted shift frame therefor, a ribbon vibrator, a guide therefor which is mounted on and shifts With said shift frame and has an opening in its upper portion, a series of typeebars, and a stationary center guide for the type-bars which extends into the opening o1 said vibrator guide and has supporting legs Which straddle said vibrator guide, substantially as set forth.

Vitness my hand, this 18th day of November, 1907.

EDWARD S. MCALL.

'Vitnesses CHESTER V. REID, O'r'ro A. SCIIILLY. 

